Comparison
IGF-1 vs HGH (Somatropin)
Growth hormone acts upstream of IGF-1; mecasermin supplies recombinant human IGF-1 directly.
IGF-1
Native insulin-like growth factor; recombinant form: mecasermin
HGH (Somatropin)
Recombinant Human Growth Hormone (191-aa)
Effectiveness Profile
At a Glance
| IGF-1 | HGH (Somatropin) | |
|---|---|---|
| Type | GH & IGF | GH & IGF |
| Legal status | Rx-Only | Rx-Only |
| Half-life | Varies | 2–4HR (SC) |
| Preferred route | Product-specific | SubQ |
| Dose frequency | custom | once-daily |
| Beginner dose | — | 1–2 IU |
| Intermediate dose | — | 2–4 IU |
| Advanced dose | — | 4–8 IU |
| Cycle length | — | 16–104 wks |
| Bioavailability | — | 80% |
| Time to peak | — | 4h |
| Active duration | — | 24h |
| Storage | Product-specific | 2–8°C |
| PCT required | No | No |
| Ancillaries required | No | No |
| Safe for women | Yes | Yes |
Verdict
This comparison covers native IGF-1, whose recombinant form is mecasermin, and HGH (Somatropin). Keep the molecule and formulation beside every research finding or protocol.
The native IGF-1 profile explains its human and laboratory evidence. The HGH (Somatropin) profile covers that compound's separate evidence and any available supplier listings. Clinical findings for one product do not establish another product's bodybuilding effects.
IGF-I research helps explain the interest in the GH/IGF axis. A shared pathway does not establish an optimal combination, extra muscle gain or the safety of combining products.
Pick A or B?
Researching native IGF-1 or mecasermin: start with the IGF-1 guide.
Researching HGH (Somatropin): use its dedicated profile and check the exact product identity before comparing suppliers.
Keep clinical, animal and cell findings separate from personal community reports. This comparison does not rank one compound as universally more effective or safer.